Search results for "Guide"
showing 10 items of 1478 documents
Turismo ed effetto città
2009
Design and Fabrication of Terahertz Bragg Gratings on a Two-Wire Waveguide
In this study, we present the design and the fabrication procedure of waveguide-integrated Bragg Gratings operating at THz frequencies.
Design and Fabrication of Terahertz Metallic Gratings on a Two-Wire Waveguide
In this study, we present the design, fabrication and experimental characterization of waveguide-integrated gratings operating at THz frequencies
Reaching toward individualization in planning for children with special needs
2009
Integrating young children with special needs into programs for typically developing children is a current trend. Yet, integration may threaten a teacher's ability to meet the needs of an individual child. The aim of this study was to gain an understanding of the teachers’ orientation in early intervention/early childhood special education. Data from thirteen early childhood generic educators/early childhood special educators were collected to provide a qualitative description of their assessment and planning practices. Findings indicated that generic early childhood/early childhood special educators’ assessment, planning, and programming for meeting the needs of individual children were no…
MWP true time delay implemented in PbS-SU8 waveguides
2015
Es presenta un nou tipus de dispositiu de retard en temps real de microones (TTD) basat en la dispersió de punts quàntics col·loïdals PbS (QD) en el fotoresist SU8 disponible comercialment. Amb aquest propòsit, els nanocompostos PbS-SU8 s’integren en una plataforma de silici en forma de guies d’ones de cresta. Quan aquestes estructures es bomben a longituds d’ona per sota de l’interval de banda dels PbS QD, es realitza un desplaçament de fase en un senyal de microones transmès òpticament (a 1550 nm) i, per tant, es produeix un retard temporal. A més, es milloren els resultats mitjançant la implementació d’una nova guia d’ones de doble capa de cresta composta per un nanocompost PbS-SU8 i una…
Carboniferous trace fossils from Vélez-Málaga (Maláguide Complex, Betic Cordillera, SE Spain).
2018
Inverse nonlinear design in silicon waveguides
2014
La tecnologia fotònica basada en silici és objecte d'intensa investigació tant al món acadèmic com a la indústria. Un dels seus principals atractius rau en la seua elevada compatibilitat amb tècniques ja desenvolupades per a la integració de circuits electrònics, cosa que podria reduir el seu cost. A més, el silici ofereix una gran diversitat d'efectes no lineals que poden ser aprofitats per processar senyals òptics en xips compactes a velocitats superiors als dispositius electrònics actuals. En particular, l'objectiu d'aquesta tesi ha estat dissenyar una guia integrada en una plataforma híbrida de silici i sílice per generar espectres supercontinus. Aquest projecte presentava diferents rep…
English language learning: an applied reading experiment in USA
2014
El proyecto se centra en el estudio de la viabilidad de la importación, a las escuelas de primaria españolas, de las técnicas de aprendizaje de L2 conocidas como lectura guiada, las cuales son muy comunes en las escuelas primarias estadounidenses que implementen programas de educación bilingüe. Al mismo tiempo, se estudia la posibilidad de renovar dichas técnicas de aprendizaje mediante la incorporación de nuevas tecnologías, las cuales podrían aportar nuevos escenarios educativos de acuerdo con la modernidad de nuestro presente. El motivo por el cual se plantean dichas hipótesis reside en mi experiencia trabajando como profesor bilingüe en escuelas primarias estadounidenses entre 2005 y 20…
Ultrasonic Guided Waves-Based Monitoring of Rail Head: Laboratory and Field Tests in Advances in Civil Engineering
2010
Recent train accidents have reaffirmed the need for developing a rail defect detection system more effective than that currently used. One of the most promising techniques in rail inspection is the use of ultrasonic guided waves and noncontact probes. A rail inspection prototype based on these concepts and devoted to the automatic damage detection of defects in rail head is the focus of this paper. The prototype includes an algorithm based on wavelet transform and outlier analysis. The discrete wavelet transform is utilized to denoise ultrasonic signals and to generate a set of relevant damage sensitive data. These data are combined into a damage index vector fed to an unsupervised learning…
Ultrasonic guided wave propagation in long bones with varying cortical thickness
2009
The propagation of ultrasonic guided wave (GW) in the long bone is very sensitive to the bones' shapes, properties and cortical thicknesses (CTh). Most of the previous studies on the GW propagation in long bones mainly focused on the bones with uniform CTh. However, it is necessary to understand the impacts of CTh variation, such as mode conversion. Therefore, an adequate analysis on GW propagating in long bones with varying CTh is essential for the precise calibration of the quantitative measurement of it. The aim of this study is to use a modified boundary element method (BEM) to analyze the GW propagation characteristics in long bones with varying CTh. Numerical analysis implemented by t…